Power balance investigation in long-pulse high-performance discharges with ITER-like tungsten divertor on EAST

doi:10.1088/1741-4326/aba0c6

	Power balance investigation in long-pulse high-performance discharges with ITER-like tungsten divertor on EAST
	Liu, Y. K.3,6; Gao, X.3,5; Hanada, K.1; Yu, Y. W.5; Liu, H. Q.5; Yang, L.5; Zhang, T.5; Jie, Y. X.3,5; Qian, J. P.5; Zeng, L.5
刊名	NUCLEAR FUSION
	2020-09-01
卷号	60
关键词	heat load calorimetric measurement long pulse power balance EAST
ISSN号	0029-5515
DOI	10.1088/1741-4326/aba0c6
通讯作者	Gao, X.(xgao@ipp.ac.cn)
英文摘要	The Experimental Advanced Superconducting Tokamak (EAST) research program concentrates on demonstrating steady-state high-performance H-mode operations with ITER-like tungsten divertor. Calorimetry was applied to actively water-cool the plasma facing components (PFCs) by increasing the water temperature for power balance investigation. Considering the energy balance of EAST long-pulse high-performance discharges with upper single null (USN) con?guration, thus far, approximately 78% of the injected energy could be accounted for. The method of estimation of heat flux on upper tungsten divertor target with a high time- and spatial-resolved infrared camera has been developed, and the sum of its heat load was found to be significantly consistent with that measured through calorimetry. The record longest steady-state H-mode plasma #73 999 was sustained for up to 101.2 s with net injected energy exceeding similar to 0.25 GJ in the USN configuration. Heat load analysis of this discharge using calorimetric measurement indicates that the modification of heat load distribution was observed and this was induced by a slight change in the magnetic configuration. Not all temperature increments in the five cooling water modules reached the saturated state for the 100 s level discharge, which means that 100 s timescales are insufficient as compared to the thermal transport timescale in the targeted PFCs. The heat load on the tungsten divertor targets is not evenly distributed with the ratio of similar to 2 in favour of the outer divertor.The experimental results and analysis of the physics involved in these USN configuration discharges are reported and discussed.
资助项目	National Nature Science Foundation of China[11975271] ; National Nature Science Foundation of China[11675211] ; National Nature Science Foundation of China[11805136] ; National Nature Science Foundation of China[11922513] ; grant of maintenance project of the major scientific and technological infrastructure of the Chinese Academy of Sciences in 2017 ; National Key R&D Program of China[2017YFE0301205] ; Heifei institutes of Physical Science, Chinese Academy of Sciences[YZJJ2018QN8] ; JSPS-NRF-NSFC A3 Foresight Program in the field of Plasma Physics (NSFC)[11261140328] ; Collaborative Research Program of the Research Institute for Applied Mechanics, Kyushu University
WOS关键词	RADIATION DISTRIBUTION ; H-MODE ; ENERGY-DISTRIBUTION ; TORE-SUPRA ; HEAT-FLUX ; DIII-D ; CALORIMETRY ; THERMOGRAPHY ; OPERATION ; PROGRESS
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000561355600001
资助机构	National Nature Science Foundation of China ; grant of maintenance project of the major scientific and technological infrastructure of the Chinese Academy of Sciences in 2017 ; National Key R&D Program of China ; Heifei institutes of Physical Science, Chinese Academy of Sciences ; JSPS-NRF-NSFC A3 Foresight Program in the field of Plasma Physics (NSFC) ; Collaborative Research Program of the Research Institute for Applied Mechanics, Kyushu University
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/43114]
专题	中国科学院合肥物质科学研究院
通讯作者	Gao, X.
作者单位	1.Kyushu Univ, Res Inst Appl Mech, Kasuga, Fukuoka 8168580, Japan 2.Univ Tennessee, Knoxville, TN 37996 USA 3.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 4.Univ Sci & Technol China, Hefei 230026, Peoples R China 5.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 6.Shenzhen Univ, Key Lab Optoelect Devices & Syst, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China
推荐引用方式 GB/T 7714	Liu, Y. K.,Gao, X.,Hanada, K.,et al. Power balance investigation in long-pulse high-performance discharges with ITER-like tungsten divertor on EAST[J]. NUCLEAR FUSION,2020,60.
APA	Liu, Y. K..,Gao, X..,Hanada, K..,Yu, Y. W..,Liu, H. Q..,...&Li, J. G..(2020).Power balance investigation in long-pulse high-performance discharges with ITER-like tungsten divertor on EAST.NUCLEAR FUSION,60.
MLA	Liu, Y. K.,et al."Power balance investigation in long-pulse high-performance discharges with ITER-like tungsten divertor on EAST".NUCLEAR FUSION 60(2020).